Linux 5.4 Brings Working Temperature Reporting For AMD Ryzen 3000 Series CPUs

[JWolfe]

Hi

I have built a new machine with

• CPU: Ryzen 3700X,
• Motherboard: Gigabyte X570 Aorus Ultra,
• GPU: Sapphire Radeon RX 5700
• Boot drive: Gigabute Aorus NVMe Gen4 SSD 1TB
• OS: OpenSuse Tumbleweed

as the key components.

My last home build lasted nearly 10 years, so I'm a little rusty!

I can't get LM-Sensors to return anything sensible, and it doesn't always even return the same. At the moment Tumbleweed is using Kernel 5.3, so I appreciate that I won't get the things discussed in this article, but I don't recognise what I am getting. After running sensors-detect - I think correctly - I get
sensors output as below. I am not bothered by the voltages, I'm unlikely to do anything to tax them. However I would like to monitor temperatures and fan speeds and there is clearly some garbage in there. Am I using the correct software (lm-sensors) or is there anything better? How can I interpret the data with confidence, when it includes -55C and no range?

Sorry if anyone thinks I have hi-jacked a forum - please just point me in the right direction

JW














iwlwifi-virtual-0
Adapter: Virtual device
temp1: +32.0°C

it8792-isa-0a60
Adapter: ISA adapter
in0: +1.80 V (min = +0.00 V, max = +2.78 V)
in1: +0.67 V (min = +0.00 V, max = +2.78 V)
in2: +0.98 V (min = +0.00 V, max = +2.78 V)
+3.3V: +1.68 V (min = +0.00 V, max = +2.78 V)
in4: +1.80 V (min = +0.00 V, max = +2.78 V)
in5: +1.18 V (min = +0.00 V, max = +2.78 V)
in6: +2.78 V (min = +0.00 V, max = +2.78 V) ALARM
3VSB: +1.67 V (min = +0.00 V, max = +2.78 V)
Vbat: +1.59 V
fan1: 0 RPM (min = 0 RPM)
fan2: 0 RPM (min = 0 RPM)
fan3: 0 RPM (min = 0 RPM)
temp1: +34.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor
temp2: -55.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor
temp3: +32.0°C (low = +127.0°C, high = +127.0°C) sensor = thermistor
intrusion0: ALARM

acpitz-acpi-0
Adapter: ACPI interface
temp1: +16.8°C (crit = +20.8°C)

[muncrief]

For those who missed it Michael's article at "https://www.phoronix.com/scan.php?pa...10temp-Patches" has links to patches that have enabled temperature and fan RPM reporting on 5.3x kernels, including the final release from yesterday, on my x570/R7 3700X system.

[tildearrow]

No, there is no mainline support yet for any voltage/power reporting for any Zen CPUs on Linux.

Typo:

other hudles in the past.

[Michael]

Will this also mean working voltage/power reporting? zenpower is ok for temperature, the voltages are obviously wrong though..

No, there is no mainline support yet for any voltage/power reporting for any Zen CPUs on Linux.

[Termy]

Will this also mean working voltage/power reporting? zenpower is ok for temperature, the voltages are obviously wrong though..

[starshipeleven]

They really dropped the ball on this one. I don't remember Intel being this bad on those things. Lets hope the distros backport this on their kernels, since it looks trivial to do.

Afaik AMD never cared much about thermal sensors. It was always done by "the community" (aka the hwmon kernel subsystem maintainer, don't remember the name). This time he is either fed up or was doing more important stuff.

[M@GOid]

They really dropped the ball on this one. I don't remember Intel being this bad on those things. Lets hope the distros backport this on their kernels, since it looks trivial to do.

[phoronix]

Phoronix: Linux 5.4 Brings Working Temperature Reporting For AMD Ryzen 3000 Series CPUs

One of the early pull requests for the just-opened Linux 5.4 kernel merge window is the hardware monitoring "hwmon" subsystem changes. This time around the notable change is CPU temperature reporting for Ryzen 3000 series processors...

http://www.phoronix.com/scan.php?page=news_item&px=Linux-5.4-Hwmon-Zen-2-Thermal